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ALTON <br />ENGINEERING, INC. <br />FLAME LIQUORS - 1301 KETTLEMAN LANE, LODI, CA 95242 01/20/98 10:54 <br />TANK HOLDDOWN/BUOYANCY CALCULATION - 20,000 GAL, <FLAME-1.WK1> <br />THIS CALCULATION IS FOR TRUSCO TANKS, AS DESCRIBED BELOW: <br />CAPACITY 20000 GALLONS WEIGHT 17680 LBS. <br />DIAMETER 10.78 FEET SUMPS 1 <br />LENGTH 30.05 FEET <br />TANK SLAB THICKNESS 0.67 FT. <br />BURY DEPTH (TOP OF SLAB) 5.00 FT. <br />ASSUME TANK AND BACKFILL COMPLETELY SUBMERGED, TO BOTTOM OF SLAB: <br />SUBMERGED WGT OF BACKFILL : 60.00 LBS/C.F. (PCF) <br />UNSUBMERGED WGT OF CONCRETE 150.00 PCF <br />WATER : 7.48 GALS./C.F. <br />WATER : 62.40 PCF <br />1. OVERBURDEN ABOVE THE TANK CAN BE CALCULATED USING THE FOLLOWING <br />FORMULA (PER PEI/RP 100-94): <br />((H/3)(Bl + B2 + SgRt B142)) - ((V/2) + M) <br />D : TANK DIAMETER <br />d : BURIAL DEPTH (to BOTTOM of SLAB) : 4.33 FT, <br />H = (D/2) + d : 9.72 FT. <br />L : TANK LENGTH <br />Bl : SLAB AREA : (L+4)*(D+3) = 469.25 SQ.FT. <br />B2 = REFLECTED TANK AREA (D*L) : 323.98 SQ.FT. <br />V : TANK DISPLACEMENT = Pi+rr*L = 2743.30 C.F. <br />M = VOIDS IN OVERBURDEN : 42" DIAN. SUMPS : 1 SUMP <br />: Pi=(3.5'/2)(3.5'/2) 4.33 FT. * # : 41.69 C.F. <br />THEREFORE OVERBURDEN ABOVE TANK WOULD BE EQUAL TO: <br />H/3 B1+B2 S9RtB1#B2 (V/2)+M <br />3.24 793.23 389.91 1413.34 : 2421.58 C.F. <br />2421.58 C.F. + 60.00 PCF : 145295 LBS. <br />2. CONCRETE SLAB : B1 * SLAB THICKNESS * CONC. WGT.: 46925 LBS. <br />3. TANK WEIGHT (PER MANUFACTURER) : 17680 LBS. <br />4, TANK TOP ANCILLARY EQUIPMENT : 1250 LBS. <br />TOTAL UPLIFT FORCE (UF) : (V+M) $ WATER.WGT.= 173783 LBS. <br />TOTAL RESISTANT FORCE (RF) _ (ITEMS 1,-4.) : 211150 LBS. <br />EXCESS RESIST FORCE RF -UF = 37366 LBS, : 18.7 TONS <br />JAN 2 9 1998 <br />eQ, <br />a An <br />a <br />c� NO- C "0" <br />s•si.ss <br />RF MORE THAN UF, THEREFORE, HOLDDOWNS NOT REQUIRED AT 60 " MIN. BURY DEPTH. <br />SAFETY FACTORY : RF/UF = 1.22 (DOES NOT INCLUDE FRICTION FACTORS, <br />WHICH INCREASE MARGIN). <br />-o0o- <br />843 Riske Lane, West Sacramento, CA 95691 (916) 372-1888 - Fax 373-1172 <br />Mailing Address: P.O. Box 1025, West Sacramento, CA 95691 <br />